Using search in ColumnSetContainer

Hi ,

   We are using “ColumnSetContainer.mxml” to display our date into data grid .

  In “ColumnSetContainer” we are getting problem for using  “Search ” option .

Problem:

Whenever we are trying to search any data from list using search field then no result are displayed .

I want to use search functionality to search data from data grid .Please tell me how I will use search in our “ColumnSetContainer” for our custom object list.